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首页> 外文期刊>Journal of propulsion and power >Optimization of Blockerless Engine Thrust Reverser
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Optimization of Blockerless Engine Thrust Reverser

机译：无障碍发动机推力换向器的优化

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The aim of this investigation was to perform a parametric computational study of the blockerless engine thrust reverser system concept Early experimental investigations had revealed that injection flow rates of the order of 3 % of the fan flow were needed to divert the entire fan flow out through the cascade opening. For a high bypass ratio engine, this amount was too much to be bled from the compressor. This study performs a more detailed evaluation of the concept and covers cases that could not be tested during the experimental investigation due to the limitations of experimental facility. A numerical model simulating the experimental setup was constructed, and effects of various design parameters such as injection location, injection angle, injection thickness, cascade opening, and operational parameters such as fan flow and injection flow rates were studied using trajectory-based analysis. The results suggest that the injection location and injection angle have a profound effect on the performance, and injection flow rates of less than 1.5% could easily divert the entire fan flow through the cascade opening by optimizing parameters of interest.
机译：这项研究的目的是对无障碍发动机推力反向器系统概念进行参数化计算研究，早期的实验研究表明，需要将风机流量的3％作为喷射流量，以将整个风机流量从发动机中排出。级联开放。对于高旁通比发动机，该量太多，无法从压缩机中排出。这项研究对概念进行了更详细的评估，并涵盖了由于实验设备的限制而无法在实验研究期间进行测试的案例。建立了模拟实验装置的数值模型，并使用基于轨迹的分析研究了各种设计参数（如喷射位置，喷射角度，喷射厚度，级联开度）以及运行参数（如风扇流量和喷射流量）的影响。结果表明，喷射位置和喷射角度对性能有深远影响，小于1.5％的喷射流量可以通过优化相关参数轻松地将整个风扇流量转移通过级联开口。

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